Patents by Inventor Yi-Wen Ku
Yi-Wen Ku has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20220173272Abstract: A light-emitting package, includes: a housing including an opening; a lead frame covered by the housing; a light-emitting device, mounted in the opening and electrically connected to the lead frame, the light-emitting device including: a substrate including: a base with a main surface; and a plurality of protrusions on the main surface, wherein the protrusion and the base include different materials; a semiconductor stack on the main surface, the semiconductor stack including a side wall, and wherein an included angle between the side wall and the main surface is an obtuse angle; wherein the main surface includes a peripheral area not covered by the semiconductor stack, and the peripheral area is devoid of the protrusion formed thereon; and a filling material filling in the opening and covering the light-emitting device.Type: ApplicationFiled: February 17, 2022Publication date: June 2, 2022Inventors: Li-Ming CHANG, Tzung-Shiun YEH, Chien-Fu SHEN, Wen-Hsiang LIN, Pei-Chi CHIANG, Yi-Wen KU
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Patent number: 11282982Abstract: A light-emitting device, includes: a substrate, including a base with a main surface; and a plurality of protrusions on the main surface, wherein the protrusion and the base include different materials; and a semiconductor stack on the main surface, including a side wall, and wherein an included angle between the side wall and the main surface is an obtuse angle; wherein the main surface includes a peripheral area surrounding the semiconductor stack, and the peripheral area is devoid of the protrusion formed thereon.Type: GrantFiled: January 22, 2020Date of Patent: March 22, 2022Assignee: EPISTAR CORPORATIONInventors: Li-Ming Chang, Tzung-Shiun Yeh, Chien-Fu Shen, Wen-Hsiang Lin, Pei-Chi Chiang, Yi-Wen Ku
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Publication number: 20200243714Abstract: A light-emitting device, includes: a substrate, including a base with a main surface; and a plurality of protrusions on the main surface, wherein the protrusion and the base include different materials; and a semiconductor stack on the main surface, including a side wall, and wherein an included angle between the side wall and the main surface is an obtuse angle; wherein the main surface includes a peripheral area surrounding the semiconductor stack, and the peripheral area is devoid of the protrusion formed thereon.Type: ApplicationFiled: January 22, 2020Publication date: July 30, 2020Inventors: Li-Ming CHANG, Tzung-Shiun YEH, Chien-Fu SHEN, Wen-Hsiang LIN, Pei-Chi CHIANG, Yi-Wen KU
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Patent number: 10658544Abstract: A light-emitting device comprises a semiconductor layer sequence comprising a first semiconductor layer having a first electrical conductivity, a second semiconductor layer having a second electrical conductivity, and an active layer interposed between the first semiconductor layer and the second semiconductor layer; a plurality of beveled trenches formed in the semiconductor layer sequence; a plurality of protruding structures respectively formed in the plurality of beveled trenches; a dielectric layer formed on the second semiconductor layer and an inner sidewall of the plurality of beveled trenches; a reflecting layer interposed between the semiconductor layer sequence and the dielectric layer; and a metal layer formed along the inner sidewall of the plurality of beveled trenches, wherein the dielectric layer, the reflecting layer and the metal layer are overlapping, the plurality of protruding structures and the reflecting layer are not overlapping.Type: GrantFiled: April 12, 2019Date of Patent: May 19, 2020Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Yu-Chen Yang, Li-Ping Jou, Hui-Chun Yeh, Yi-Wen Ku
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Publication number: 20190237624Abstract: A light-emitting device comprises a semiconductor layer sequence comprising a first semiconductor layer having a first electrical conductivity, a second semiconductor layer having a second electrical conductivity, and an active layer interposed between the first semiconductor layer and the second semiconductor layer; a plurality of beveled trenches formed in the semiconductor layer sequence; a plurality of protruding structures respectively formed in the plurality of beveled trenches; a dielectric layer formed on the second semiconductor layer and an inner sidewall of the plurality of beveled trenches; a reflecting layer interposed between the semiconductor layer sequence and the dielectric layer; and a metal layer formed along the inner sidewall of the plurality of beveled trenches, wherein the dielectric layer, the reflecting layer and the metal layer are overlapping, the plurality of protruding structures and the reflecting layer are not overlapping.Type: ApplicationFiled: April 12, 2019Publication date: August 1, 2019Inventors: Chao-Hsing CHEN, Yu-Chen YANG, Li-Ping JOU, Hui-Chun YEH, Yi-Wen KU
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Patent number: 10304999Abstract: A light-emitting device comprises a semiconductor layer sequence comprising a first semiconductor layer having a first electrical conductivity, a second semiconductor layer having a second electrical conductivity, and an active layer interposed between the first semiconductor layer and the second semiconductor layer; a plurality of beveled trenches formed in the semiconductor layer sequence; a plurality of protruding structures respectively formed in the plurality of beveled trenches; a dielectric layer formed on the second semiconductor layer and an inner sidewall of the plurality of beveled trenches; a reflecting layer interposed between the semiconductor layer sequence and the dielectric layer; and a metal layer formed along the inner sidewall of the plurality of beveled trenches, wherein the dielectric layer, the reflecting layer and the metal layer are overlapping, the plurality of protruding structures and the reflecting layer are not overlapping.Type: GrantFiled: December 19, 2017Date of Patent: May 28, 2019Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Yu-Chen Yang, Li-Ping Jou, Hui-Chun Yeh, Yi-Wen Ku
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Publication number: 20180108807Abstract: A light-emitting device comprises a semiconductor layer sequence comprising a first semiconductor layer having a first electrical conductivity, a second semiconductor layer having a second electrical conductivity, and an active layer interposed between the first semiconductor layer and the second semiconductor layer; a plurality of beveled trenches formed in the semiconductor layer sequence; a plurality of protruding structures respectively formed in the plurality of beveled trenches; a dielectric layer formed on the second semiconductor layer and an inner sidewall of the plurality of beveled trenches; a reflecting layer interposed between the semiconductor layer sequence and the dielectric layer; and a metal layer formed along the inner sidewall of the plurality of beveled trenches, wherein the dielectric layer, the reflecting layer and the metal layer are overlapping, the plurality of protruding structures and the reflecting layer are not overlapping.Type: ApplicationFiled: December 19, 2017Publication date: April 19, 2018Inventors: Chao-Hsing CHEN, Yu-Chen YANG, Li-Ping JOU, Hui-Chun YEH, Yi-Wen KU
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Patent number: 9876138Abstract: A light-emitting device comprises a semiconductor layer sequence comprising a first semiconductor layer having a first electrical conductivity, a second semiconductor layer having a second electrical conductivity, and an active layer interposed between the first semiconductor layer and the second semiconductor layer; a plurality of beveled trenches formed in the semiconductor layer sequence; a plurality of protruding structures respectively formed in the plurality of beveled trenches; a dielectric layer formed on the second semiconductor layer and an inner sidewall of the plurality of beveled trenches; a reflecting layer interposed between the semiconductor layer sequence and the dielectric layer; and a metal layer formed along the inner sidewall of the plurality of beveled trenches, wherein the dielectric layer, the reflecting layer and the metal layer are overlapping, the plurality of protruding structures and the reflecting layer are not overlapping.Type: GrantFiled: September 22, 2016Date of Patent: January 23, 2018Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Yu-Chen Yang, Li-Ping Jou, Hui-Chun Yeh, Yi-Wen Ku
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Publication number: 20170012167Abstract: A light-emitting device comprises a semiconductor layer sequence comprising a first semiconductor layer having a first electrical conductivity, a second semiconductor layer having a second electrical conductivity, and an active layer interposed between the first semiconductor layer and the second semiconductor layer; a plurality of beveled trenches formed in the semiconductor layer sequence; a plurality of protruding structures respectively formed in the plurality of beveled trenches; a dielectric layer formed on the second semiconductor layer and an inner sidewall of the plurality of beveled trenches; a reflecting layer interposed between the semiconductor layer sequence and the dielectric layer; and a metal layer formed along the inner sidewall of the plurality of beveled trenches, wherein the dielectric layer, the reflecting layer and the metal layer are overlapping, the plurality of protruding structures and the reflecting layer are not overlapping.Type: ApplicationFiled: September 22, 2016Publication date: January 12, 2017Inventors: Chao-Hsing CHEN, Yu-Chen YANG, Li-Ping JOU, Hui-Chun YEH, Yi-Wen KU
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Patent number: 9472725Abstract: A light-emitting device comprises a semiconductor layer sequence comprising a first semiconductor layer having a first electrical conductivity, a second semiconductor layer having a second electrical conductivity, and an active layer interposed between the first semiconductor layer and the second semiconductor layer; a plurality of protruding structures; a plurality of beveled trenches in the semiconductor layer sequence and respectively accommodating the plurality of protruding structures; a dielectric layer on the second semiconductor layer and an inner sidewall of the plurality of beveled trenches, wherein the dielectric layer comprises a surface perpendicular to a thickness direction of the semiconductor layer sequence; a metal layer formed along the inner sidewall of the plurality of beveled trenches and extending to the surface of the dielectric layer, wherein the metal layer is insulated from the second semiconductor layer by the dielectric layer; and a first electrode formed on the plurality of protruType: GrantFiled: May 6, 2015Date of Patent: October 18, 2016Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Yu-Chen Yang, Li-Ping Jou, Hui-Chun Yeh, Yi-Wen Ku
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Patent number: 9276173Abstract: A light-emitting device comprises: a light-emitting stack having an upper side, a first edge having an end point, and a second edge opposite to the first edge; a first bonding region arranged on the upper side, near the first edge, and far from the end point; a second bonding region separated from to the first bonding region by a first distance and being far from the end point; a third bonding region arranged on the upper side; a fourth bonding region separated from the third bonding region by a second distance longer than the first distance; a first electrode connected to the first bonding region; a second electrode connected to the second bonding region; a third electrode connected to the third bonding region; a fourth electrode connected to the fourth bonding region; and a fifth electrode connected to the first bonding region and pointing to the fourth bonding region.Type: GrantFiled: September 2, 2014Date of Patent: March 1, 2016Assignee: Epistar CorporationInventors: Chien-Fu Shen, Cheng-Ta Kuo, Wei-Shou Chen, Tsung-Hsien Liu, Yi-Wen Ku, Min-Hsun Hsieh
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Patent number: 9159881Abstract: Disclosed is a light-emitting device comprising: a semiconductor stack layer; a reflective layer on the semiconductor stack layer; a first buffer layer comprising a compound comprising a metallic element and a non-metallic element on the reflective layer; a first electrode; and an electrical insulating layer disposed between the first buffer layer and the first electrode.Type: GrantFiled: August 28, 2012Date of Patent: October 13, 2015Assignee: EPISTAR CORPORATIONInventors: Jia-Kuen Wang, Chien-Fu Shen, Chao-Hsing Chen, Yu-Chen Yang, Hui-Chun Yeh, Yi-Wen Ku, Hung-Che Chen, Chih-Nan Lin
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Publication number: 20150236208Abstract: A light-emitting device comprises a semiconductor layer sequence comprising a first semiconductor layer having a first electrical conductivity, a second semiconductor layer having a second electrical conductivity, and an active layer interposed between the first semiconductor layer and the second semiconductor layer; a plurality of protruding structures; a plurality of beveled trenches in the semiconductor layer sequence and respectively accommodating the plurality of protruding structures; a dielectric layer on the second semiconductor layer and an inner sidewall of the plurality of beveled trenches, wherein the dielectric layer comprises a surface perpendicular to a thickness direction of the semiconductor layer sequence; a metal layer formed along the inner sidewall of the plurality of beveled trenches and extending to the surface of the dielectric layer, wherein the metal layer is insulated from the second semiconductor layer by the dielectric layer; and a first electrode formed on the plurality of protruType: ApplicationFiled: May 6, 2015Publication date: August 20, 2015Inventors: Chao-Hsing CHEN, Yu-Chen YANG, Li-Ping JOU, Hui-Chun YEH, Yi-Wen KU
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Patent number: 9048379Abstract: A light-emitting device of an embodiment of the present application comprises a semiconductor layer sequence provided with a first main side, a second main side, and an active layer; a beveled trench formed in the semiconductor layer sequence, having a top end close to the second main side, a bottom end, and an inner sidewall connecting the top end and the bottom end. In the embodiment, the inner sidewall is an inclined surface. The light-emitting device further comprises a dielectric layer disposed on the inner sidewall of the beveled trench and the second main side; a first metal layer formed on the dielectric layer; a carrier substrate; and a first connection layer connecting the carrier substrate and the semiconductor layer sequence.Type: GrantFiled: December 2, 2013Date of Patent: June 2, 2015Assignee: EPISTAR CORPORATIONInventors: Chao-Hsing Chen, Yu-Chen Yang, Li-Ping Jou, Hui-Chun Yeh, Yi-Wen Ku
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Patent number: 9035329Abstract: The light-emitting device having an equivalent circuit, includes at least four terminals, numbered from first terminal to fourth terminal, for electrical power feeding; a first light-emitting diode, arranged between the first terminal and the second terminal, configured to not emit light when a voltage is applied between the second terminal and one of the third terminal and the fourth terminal, and configured to emit light when a. voltage is applied between the first terminal and one of the third terminal and the four the terminal; and a second light-emitting diode, arranged between the third terminal and the fourth terminal, and configured to not emit light when the voltage is applied between the third terminal and one of the first terminal and the second terminal and configured to emit light when a voltage is applied between the fourth terminal and one of the first terminal and the second terminal.Type: GrantFiled: March 15, 2011Date of Patent: May 19, 2015Assignee: Epistar CorporationInventors: Chao-Hsing Chen, Chien-Kai Chung, Hui-chen Yeh, Yi-Wen Ku
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Publication number: 20140367733Abstract: A light-emitting device comprises: a light-emitting stack having an upper side, a first edge having an end point, and a second edge opposite to the first edge; a first bonding region arranged on the upper side, near the first edge, and far from the end point; a second bonding region separated from to the first bonding region by a first distance and being far from the end point; a third bonding region arranged on the upper side; a fourth bonding region separated from the third bonding region by a second distance longer than the first distance; a first electrode connected to the first bonding region; a second electrode connected to the second bonding region; a third electrode connected to the third bonding region; a fourth electrode connected to the fourth bonding region; and a fifth electrode connected to the first bonding region and pointing to the fourth bonding region.Type: ApplicationFiled: September 2, 2014Publication date: December 18, 2014Inventors: Chien-Fu SHEN, Cheng-Ta Kuo, Wei-Shou Chen, Tsung-Hsien Liu, Yi-Wen Ku, Min-Hsun Hsieh
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Patent number: 8823039Abstract: This disclosure discloses a light-emitting device. The light-emitting device comprises: a light-emitting stack having an upper surface and a lower surface; a pad, arranged on the upper surface, comprising: a first bonding region; and a second bonding region physically connected to the first bonding region through a connecting region having a connecting width; a first electrode connected to the first bonding region; a second electrode connected to the second bonding region; and a third electrode extending from the pad and arranged between the first electrode and the second electrode. At least one of the first electrode, the second electrode, and the third electrode has a width smaller than the connecting width.Type: GrantFiled: April 30, 2012Date of Patent: September 2, 2014Assignee: Epistar CorporationInventors: Chien-Fu Shen, Cheng-Ta Kuo, Wei-Shou Chen, Tsung-Hsien Liu, Yi-Wen Ku, Min-Hsun Hsieh
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Publication number: 20140084324Abstract: A light-emitting device of an embodiment of the present application comprises a semiconductor layer sequence provided with a first main side, a second main side, and an active layer; a beveled trench formed in the semiconductor layer sequence, having a top end close to the second main side, a bottom end, and an inner sidewall connecting the top end and the bottom end. In the embodiment, the inner sidewall is an inclined surface. The light-emitting device further comprises a dielectric layer disposed on the inner sidewall of the beveled trench and the second main side; a first metal layer formed on the dielectric layer; a carrier substrate; and a first connection layer connecting the carrier substrate and the semiconductor layer sequence.Type: ApplicationFiled: December 2, 2013Publication date: March 27, 2014Applicant: EPISTAR CORPORATIONInventors: Chao-Hsing CHEN, Yu-Chen YANG, Li-Ping JOU, Hui-Chun YEH, Yi-Wen KU
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Patent number: 8598614Abstract: A light-emitting device of an embodiment of the present application comprises a semiconductor layer sequence provided with a first main side, a second main side, and an active layer; a beveled trench formed in the semiconductor layer sequence, having a top end close to the second main side, a bottom end, and an inner sidewall connecting the top end and the bottom end. In the embodiment, the inner sidewall is an inclined surface. The light-emitting device further comprises a dielectric layer disposed on the inner sidewall of the beveled trench and the second main side; a first metal layer formed on the dielectric layer; a carrier substrate; and a first connection layer connecting the carrier substrate and the semiconductor layer sequence.Type: GrantFiled: August 30, 2011Date of Patent: December 3, 2013Assignee: Epistar CorporationInventors: Chao-Hsing Chen, Yu-Chen Yang, Li-Ping Jou, Hui-Chun Yeh, Yi-Wen Ku
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Patent number: D687396Type: GrantFiled: September 6, 2012Date of Patent: August 6, 2013Assignee: Epistar CorporationInventors: Chao-Hsing Chen, Chien-Fu Shen, Tsun-Kai Ko, Yi-Wen Ku